Opera is described as 'innovative browser that focus on implementing new technologies without dropping simplicity and ease of use, speed and security; supporting and contributing to open web' and is one of the leading apps in the Web Browsers category. There are more than 100 alternatives to Opera for a variety of platforms, including Windows, Mac, Android, Linux and iPhone. The best alternative is Mozilla Firefox, which is both free and Open Source. Other great apps like Opera are Vivaldi (Free), Google Chrome (Free), Brave (Free, Open Source) and Chromium (Free, Open Source).
- Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser. View 164 alternatives to SeaMonkey
- Free • Open Source